High Resolution X-Ray Study on Anomalous Diffraction Peak Shift in Dimerized Langmuir-Blodgett Superlattice Films

Yoshio Nogami, Kazuyoshi Ogasawara, Shigeki Takeuchi, Takehiko Ishiguro, Tetsuo Nakajima, Kazumasa Ohsumi, Yutaka Shimizugawa

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Structures of Langmuir-Blodgett (LB) superlattice films formed with alternately deposited fatty acid Cd salts with different alkyl-chain length are studied by high resolution X-ray diffraction method using a synchrotron radiation source. The remarkable diffraction peak shift is observed in the superlattice film. The shift is interpreted in terms of the Guinier effect in partially-disordered superlattice system. Simultaneous modulation of molecular position and of molecular scattering factor results in the peak shift. The effect of alkyl-chain species substitution and of cooling on the peak shift are also described. The partial disorder in the superlattice is caused by dissolution of LB film.

Original languageEnglish
Pages (from-to)3114-3126
Number of pages13
Journaljournal of the physical society of japan
Volume62
Issue number9
DOIs
Publication statusPublished - 1993

Keywords

  • Langmuir-Blodgett film
  • X-ray diffraction
  • amplitude
  • phase modulations
  • superlattice

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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